Sealing paper roll



1936. F. w. HUMPHNER 2,050,794

SEALING PAPER ROLL Filed Nov. 9, 1932 jagm Patented Aug. 11, 1936 UNITED STATES OFFECE SEALING PAPER ROLL Application November 9, 1932, Serial No. 641,936

2 Claims.

This invention relates to sealing paper rolls and more particularly gummed or adhesivecoated rolls.

In the sealing of gummed paper rolls, it has 5 heretofore been the practice-to moisten the free end of the roll and to seal it against the body of the roll. When it is sought to open the roll, the end is peeled back until eventually the end strip of the roll is free. However, in this operation, a

considerable portion of the end strip is ruined;

and in addition, there is a substantial loss of time and effort. It has also been suggested that protruding tabs be inserted between the last convolution of the strip and the one adjacent thereto so that the roll may be broken by drawing the tab transversely across the roll. This construction also is unsatisfactory because of the bulkiness of the tab and the difiiculty and expense involved in positioning it. Furthermore, the

severed end of the strip remains attached to the back of the roll and can not be easily removed.

An object of the present invention is to provide simple, inexpensive, and non-protruding means for sealing the free end of a roll, while, at

5 the same time, providing a convenient free end extension which may be grasped to readily free the end of the roll. A further object is to provide means whereby a plurality of rolls may be simultaneously sealed and separated. Other specific objects and advantages will appear as the specification proceeds.

The invention is illustrated, in a preferred embodiment, by the accompanying drawing, in which- Fig. 1 is an end view in elevation ofapparatus embodying my invention; Fig. 2, a broken front view in elevation; Fig. 3, a broken and part-sectional view, the section being taken as indicated at line 3 of Fig. 1, where the section line 3 extends between the roll and the web which is being wound thereon; Fig. 4, an enlarged detail sectional view, the section being taken as indicated at line 4 of Fig. 3; and Fig. 5, a perspective view of a finished roll sealed in accordance with my invention.

In the illustration given, A designates a paper rolling machine and B, a moistening or sealing .device associated therewith.

The paper-rolling machine A may be of any suitable construction. Because of the Well known construction of this machine, a detailed description is believed not to be necessary. A frame [0 is provided in which is journaled a feed-paper roll II. The web l2 extends about the roll 13 and is severed into a plurality of narrow strips it by cutters Hi. The strips I4 are then wound upon the roll IS. The paper roll I6, is wound about a spindle H, the ends of which are guided between slotted end members I8 of well known construction. The paper roll it rests upon the actuating 5 rollers 19 and 20 which are connected by an intermediate gear 2|. The roll 20 is directly driven by shaft 22 upon which is mounted a pulley 23. Shaft 22 also carries a smaller pulley which is connected by belt 24 with the shaft 10 bearing the cutters l5.

Above the paper roll I 6 is vertically mounted a roll 25 having its shaft ends 26 guided within the slotted members 18. If desired, the roll 25 may be driven by any suitable means (not shown) to aid in the rotating of the paper roll l6.

- The moistening or sealing apparatus B will now be described. A rectangular tank or liquid receptacle 21 is mounted upon trunnions 28 which in turn are mounted upon rearwardly extending 20 casing projections A. The tank 21 is provided with a rearwardly extending handle 29 and a cap-equipped opening 30 through which liquid may be introduced into the tank. At its forward side, the tank 21 is provided with a pluralityv of 25 downwardly extended tubes 3| which are in communication with the interior of the tank. As shown more clearly in Fig. 4, a wick 32 extends through each of the spouts or tubes 3|. The inner end of the wick lies within the receptacle 0 or tank. In order to support the tank 21 normally in horizontal position, a spring finger 33 is secured to the extension A and'has-its free end engaging the'bottom of tank 21. With this arrangement, the tank 21 will normally remain 35 in horizontal position but may be tipped forward at the will of the operator to bring the free end of the wick 32 in contact with the paper strips M.

In the operation of the apparatus, the web I2 is drawn from the supply roll ll about the roll l3 and there severed into a plurality of strips 14 by cutters IS. The strips it are then drawn upwardly and about the roll 20 and wound upon the paper roll it. The driven shaft 22 causes the roll 20 to rotate in the direction of the arrow, 45 while the connecting gear 2| causes roll l9 to turn in the same direction. By this means, the roll I6 is caused to rotate and wind thereon the severed strips It. When the roll or rolls l6 are of the desired size, the ends of the paper strips 50 are sealed to the roll by tilting the tank 21 forward so that the protruding end of the wick 32 engages a portion of the gummed surface of each strip It. The liquid drawn through wick 32 molstens a spot of the summed surface and, 55

when the strip is drawn in contact with the body of the roll, forms an adhesive spot uniting the free end of the roll to the roll body.

After the tank 21 has-been tilted forward to form the moistened spot, the operator may drop a string 34, as shown more clearly in Fig. 3, transversely across the paper strips and at a spaced distance to the rear of the moistened spots 35. The string 34 after the roll has been wound up further may be drawn across the strips I4 to sever them. After the severing operation, it will be observed that each of the rolls, as illustrated in Fig. 5, is provided with an opening flap 36 which extends behind the adhesive sealing spot 35.

In forming the adhesive sealing spot on the free end of the roll, I prefer to form the spot quite near one lateral edge of each of the strips Hi. If the spot is formed near the center of the strip, it is found that the paper tends to split and strip for some little distance. However, if the spot is formed adjacent one edge, the tear or peeling of the paper runs laterally and ends shortly at the edge of the paper. In this manner, peeling is substantially prevented while, at the same time, an effective sealing of the rolled end is accomplished.

Another difliculty encountered with the sealing of the rolled end is that the liquid tends to penetrate the gummed layer and the paper therebehind and, if the paper is weak, a tear occurs across the body of the paper as the roll is opened. To overcome this, I prefer to employ a liquid solution having sufiicient body to prevent its penetration of the gummed layer. For example, ordinary tapioca dextrine may be dissolved in water in the proportions of one part of dextrine to about fifty parts of water. This gives the water suflicient body to enable it merely to soften the water-soluble gum or adhesive and without weakening the paper backing structure.

While I have suggested mixing water and dextrine in a certain proportion, it must be borne 5 in mind that the proportions must be varied in accordance with the thickness and character of paper employed and the thickness of the gummed layer thereon. Some papers may require no thickening of the moistening liquid, while other papers may require'a liquid of relatively heavy Baum.

While in the illustration given, I have shown a particular form of moistening or sealing device, it will be understood that a variety of other forms may be employed for forming sealing spots on the paper strips and without departing from the spirit of my invention. The foregoing detailed description has been given for clearness of understanding only, and no unnecessary limitations should be understood therefrom, but the appended claims should be construed as broadly as permissible, in view of the prior art.

I claim: v

1. In apparatus of the character set forth, means for dividing a roll of gummed paper into a plurality of strips, means for winding said strips into rolls, and means for forming sealing spots on the gummed surface of each of the rolls simultaneously.

2. In apparatus of the character set forth, means for dividing a roll of gummed paper into a plurality of strips, means for winding said strips into rolls, and reciprocally mounted means for moistening a spot on the gummed surface of each 35 of the rolls and adjacent an edge thereof.

FERDINAND W. HUMPHNER. 

